Can a person be cast out to satan by a church and shuned and if so do they lose there salvation, is it up to pastors and elders to judge ones repentance

The Parable of the Unmerciful Servant Then Peter came and said to him, "Lord, how often shall my brother sin against me, and I forgive him? Until seven times?" Jesus said to him, "I don't tell you until seven times, but, until seventy times seven. Therefore the Kingdom of Heaven is like a certain king, who wanted to reconcile accounts with his servants. When he had begun to reconcile, one was brought to him who owed him ten thousand talents. But because he couldn't pay, his lord commanded him to be sold, with his wife, his children, and all that he had, and payment to be made. The servant therefore fell down and kneeled before him, saying, 'Lord, have patience with me, and I will repay you all!' The lord of that servant, being moved with compassion, released him, and forgave him the debt. "But that servant went out, and found one of his fellow servants, who owed him one hundred denarii, and he grabbed him, and took him by the throat, saying, 'Pay me what you owe!' "So his fellow servant fell down at his feet and begged him, saying, 'Have patience with me, and I will repay you!' He would not, but went and cast him into prison, until he should pay back that which was due. So when his fellow servants saw what was done, they were exceedingly sorry, and came and told to their lord all that was done. Then his lord called him in, and said to him, 'You wicked servant! I forgave you all that debt, because you begged me. Shouldn't you also have had mercy on your fellow servant, even as I had mercy on you?' His lord was angry, and delivered him to the tormentors, until he should pay all that was due to him. So my heavenly Father will also do to you, if you don't each forgive your brother from your hearts for his misdeeds."

It happened when Jesus
had finished these words, he departed from Galilee, and came into the
borders of Judea beyond the Jordan. Great multitudes followed him,
and he healed them there. Pharisees came to him, testing
him, and saying, "Is it lawful for a man to divorce his wife for any
reason?"
He answered, "Haven't you read that he who made them from the beginning
made them male and female, and said, 'For this cause a man
shall leave his father and mother, and shall join to his wife; and the two
shall become one flesh?' So that they are no more two, but
one flesh. What therefore God has joined together, don't let man tear
apart."They asked him,
"Why then did Moses command us to give her a bill of divorce, and
divorce her?"
He said to them, "Moses, because of the hardness of your hearts, allowed you
to divorce your wives, but from the beginning it has not been so. I tell you that whoever divorces
his wife, except for sexual immorality, and marries another, commits
adultery; and he who marries her when she is divorced commits
adultery."His disciples said to
him, "If this is the case of the man with his wife, it is not
expedient to marry."
But he said to them,
"Not all men can receive this saying, but those to
whom it is given. For
there are eunuchs who were born that way from their mother's womb, and
there are eunuchs who were made eunuchs by men; and there are eunuchs who
made themselves eunuchs for the Kingdom of Heaven's sake. He who is able
to receive it, let him receive it."

The Little Children and Jesus

Then little children
were brought to him, that he should lay his hands on them and pray; and
the disciples rebuked them. But Jesus said, "Allow the little children, and don't forbid them to come
to me; for the Kingdom of Heaven belongs to ones like these."
He laid his hands on
them, and departed from there.

The Rich Young Man

Behold, one came to
him and said, "Good teacher, what good thing shall I do, that I may
have eternal life?"
He said to him, "Why do you call me good? No one is good but one, that is,
God. But if you want to enter into life, keep the
commandments."He said to him,
"Which ones?"
Jesus said, "'You shall not murder.' 'You shall
not commit adultery.' 'You shall not steal.' 'You shall not offer false
testimony.' 'Honor your
father and mother.' And, 'You shall love your neighbor as
yourself.'"The young man said to
him, "All these things I have observed from my youth. What do I still
lack?"
Jesus said to him,
"If you want to be perfect, go, sell what you have,
and give to the poor, and you will have treasure in heaven; and come,
follow me." But when the young man heard the
saying, he went away sad, for he was one who had great possessions.
Jesus said to his
disciples, "Most certainly I say to you, a rich man
will enter into the Kingdom of Heaven with difficulty. Again I tell you, it is easier
for a camel to go through a needle's eye, than for a rich man to enter
into the Kingdom of God."When the disciples
heard it, they were exceedingly astonished, saying, "Who then can be
saved?"
Looking at them,
Jesus said, "With men this is impossible, but with
God all things are possible."Then Peter answered,
"Behold, we have left everything, and followed you. What then will we
have?"
Jesus said to them,
"Most certainly I tell you that you who have followed
me, in the regeneration when the Son of Man will sit on the throne of his
glory, you also will sit on twelve thrones, judging the twelve tribes of
Israel. Everyone who has
left houses, or brothers, or sisters, or father, or mother, or wife, or
children, or lands, for my name's sake, will receive one hundred times,
and will inherit eternal life. But many will be last who are
first; and first who are last.